US3195015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protected electrical apparatus
Assignee: Westinghouse Electric Corp
•
Filing: 1960-09-22
•
Granted: 1965-07-13
•
Expires: 1980-09-22
Abstract
No abstract record available.
Inventors
- 👤 Jr John J Astleford
- 👤 Thomas P Henry
- 👤 Merrill G Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:28
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/30; H01F; H01F27/00; H01F27/40; H01F27/402; H01F27/404; H01H37/00; H01H37/004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A PROTECTED TRANSFORMER COMPRISING AN INSULATED HIGH VOLTAGE WINDING, AN INSULATED LOW VOLTAGE WINDING, A CASING, A FLUID DIELECTRIC IN SAID CASING, SAID WINDINGS BEING DISPOSED IN SAID DIELECTRIC, LEADS CONNECTED TO SAID LOW VOLTAGE WINDING AND PASSING OUT OF SAID CASING, A RECLOSABLE CIRCUIT INTERRUPTER DISPOSED WITHIN SAID CASING AND HAVING CONTACTS IN SERIES CIRCUIT RELATION WITH AT LEAST ONE OF SAID LEADS, SAID INTERRUPTER INCLUDING ELECTRICALLY OPERATED TRIPPING MEANS FOR OPENING SAID CONTACTS WHEN ENERGIZED, A COIL LOOSELY COUPLED IN INDUCTIVE RELATION WITH SAID HIGH VOLTAGE WINDING FOR SUPPLYING ELECTRIC CURRENT, FIRST INDIVIDUALLY ADJUSTABLE THERMALLY RESPONSIVE MEANS FOR CONNECTING SAID COIL TO SID TRIPPING MEANS TO OPEN SAID CONTACTS IN RESPONSE TO A PREDETERMINED TEMPERATURE CONDITION OF SAID FLUID DIELECTRIC, A SIGNALLING MEANS, AND SECOND INDIVIDUALLY ADJUSTABLE THERMALLY RESPONSIVE MEANS OPERABLE INDEPENDENTLY OF THE FIRST THERMALLY RESPONSIVE MEANS FOR CONNECTING SAID SIGNALLING
Claim 2
Dependent Claim
144 words
A PROTECTED TRANSFORMER COMPRISING AN INSULATED HIGH VOLTAGE WINDING, AN INSULATED LOW VOLTAGE WINDING, A CASING, A FLUID DIELECTRIC IN SAID CASING, SAID WINDINGS BEING DISPOSED IN SAID DIELECTRIC, LEADS CONNECTED TO SAID LOW VOLTAGE WINDING AND PASSING OUT OF SAID CASING, A RECLOSABLE CIRCUIT INTERRUPTER DISPOSED WITHIN SAID CASING AND HAVING CONTACTS IN SERIES CIRCUIT RELATION WITH AT LEAST ONE OF SAID LEADS, SAID INTERRUPTER INCLUDING ELECTRICALLY OPERATED TRIPPING MEANS FOR OPENING SAID CONTACTS WHEN ENERGIZED, A COIL LOOSELY COUPLED IN INDUCTIVE RELATION WITH SAID HIGH VOLTAGE WINDING FOR SUPPLYING ELECTRIC CURRENT, FIRST INDIVIDUALLY ADJUSTABLE THERMALLY RESPONSIVE MEANS FOR CONNECTING SAID COIL TO SID TRIPPING MEANS TO OPEN SAID CONTACTS IN RESPONSE TO A PREDETERMINED TEMPERATURE CONDITION OF SAID FLUID DIELECTRIC, A SIGNALLING MEANS, AND SECOND INDIVIDUALLY ADJUSTABLE THERMALLY RESPONSIVE MEANS OPERABLE INDEPENDENTLY OF THE FIRST THERMALLY RESPONSIVE MEANS FOR CONNECTING SAID SIGNALLING
References Cited (Backward Citations)
US2298229A
Cited
US2356055A
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US2333537A
Cited
US2597185A
Cited
US2650356A
Cited
US3126500A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |